EP0858170A3 - System for preventing distortion in an analog-to-digital converter - Google Patents

System for preventing distortion in an analog-to-digital converter Download PDF

Info

Publication number
EP0858170A3
EP0858170A3 EP98100753A EP98100753A EP0858170A3 EP 0858170 A3 EP0858170 A3 EP 0858170A3 EP 98100753 A EP98100753 A EP 98100753A EP 98100753 A EP98100753 A EP 98100753A EP 0858170 A3 EP0858170 A3 EP 0858170A3
Authority
EP
European Patent Office
Prior art keywords
output signal
pseudo
sequence
random numbers
bit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP98100753A
Other languages
German (de)
French (fr)
Other versions
EP0858170A2 (en
EP0858170B1 (en
Inventor
Robert E. Jewett
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Agilent Technologies Inc
Original Assignee
Hewlett Packard Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hewlett Packard Co filed Critical Hewlett Packard Co
Publication of EP0858170A2 publication Critical patent/EP0858170A2/en
Publication of EP0858170A3 publication Critical patent/EP0858170A3/en
Application granted granted Critical
Publication of EP0858170B1 publication Critical patent/EP0858170B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters
    • H03M1/0617—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence
    • H03M1/0634—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence by averaging out the errors, e.g. using sliding scale
    • H03M1/0636—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence by averaging out the errors, e.g. using sliding scale in the amplitude domain
    • H03M1/0639—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence by averaging out the errors, e.g. using sliding scale in the amplitude domain using dither, e.g. using triangular or sawtooth waveforms
    • H03M1/0641—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence by averaging out the errors, e.g. using sliding scale in the amplitude domain using dither, e.g. using triangular or sawtooth waveforms the dither being a random signal
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters
    • H03M1/08—Continuously compensating for, or preventing, undesired influence of physical parameters of noise
    • H03M1/0827—Continuously compensating for, or preventing, undesired influence of physical parameters of noise of electromagnetic or electrostatic field noise, e.g. preventing crosstalk by shielding or optical isolation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Analogue/Digital Conversion (AREA)

Abstract

The raw digital output signal generated at the transmitter by an ADC is XOR'd with a sequence of pseudo-random numbers to generate an encoded output signal. This removes all correlation between the analog input signal and the encoded output signal. Coherence between the encoded output signal and the analog input signal is prevented and the effects of crosstalk to the analog input signal are mitigated. In a first embodiment of the invention, the sequence of pseudo-random numbers is a sequence of one-bit pseudo-random numbers that are XOR'd with each bit of the raw digital output signal. In a second embodiment, the sequence of pseudo-random numbers is a sequence of N-bit pseudo-random numbers that are XOR'd with the N-bit words of the digital output signal. To recreate the original raw digital output signal in the receiver, a second XOR operation is performed between the encoded output signal and the sequence of pseudo-random numbers. Alternatively, a pseudo-random number generator located in each of the transmitter and receiver are synchronized to generate equal sequences of PRNs that encode the raw digital output signal and decode the encoded output signal. Intermediate digital pipelining may be used to add a decoding bit from the pseudo-random-number generator to the encoded output signal. Such additional bit may be stored in memory with the encoded output signal to permit later decoding.
EP98100753A 1997-02-05 1998-01-16 System for preventing distortion in an analog-to-digital converter Expired - Lifetime EP0858170B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/795,220 US5793318A (en) 1997-02-05 1997-02-05 System for preventing of crosstalk between a raw digital output signal and an analog input signal in an analog-to-digital converter
US795220 1997-02-05

Publications (3)

Publication Number Publication Date
EP0858170A2 EP0858170A2 (en) 1998-08-12
EP0858170A3 true EP0858170A3 (en) 2001-04-04
EP0858170B1 EP0858170B1 (en) 2003-04-02

Family

ID=25165047

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98100753A Expired - Lifetime EP0858170B1 (en) 1997-02-05 1998-01-16 System for preventing distortion in an analog-to-digital converter

Country Status (4)

Country Link
US (1) US5793318A (en)
EP (1) EP0858170B1 (en)
JP (1) JPH10261960A (en)
DE (1) DE69812742T2 (en)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2319930B (en) * 1996-11-27 2001-05-16 Sony Uk Ltd Storage and transmission of one-bit data
FI104768B (en) 1998-03-05 2000-03-31 Nokia Networks Oy Procedure for reducing interference and synthesizer arrangements
SE517536C2 (en) 2000-03-14 2002-06-18 Ericsson Telefon Ab L M Device and method for background calibration of A / D converters
WO2002030012A2 (en) * 2000-10-06 2002-04-11 Scientific-Atlanta, Inc. Analog-to-digital spurious noise improvement using a pseudo-random binary sequence generator
US7068788B2 (en) * 2001-01-04 2006-06-27 Maxim Integrated Products, Inc. Data encryption for suppression of data-related in-band harmonics in digital to analog converters
AU2002254548A1 (en) * 2001-04-07 2002-10-21 Telehublink Coporation Methods and systems for securing information communicated between communication devices
DE10142102A1 (en) * 2001-08-30 2003-03-27 Schleifring Und Appbau Gmbh Low noise signal transmission arrangement combines random number with signal to be transmitted so distances between spectral lines in signal spectrum is significantly reduced
DE10162310A1 (en) * 2001-12-19 2003-07-03 Philips Intellectual Property Method for signal transmission e.g. for small computers in credit card format, signal transmission takes place via smart card controller
US20050047512A1 (en) * 2003-08-28 2005-03-03 Neff Robert M. R. System and method using self-synchronized scrambling for reducing coherent interference
US6933862B2 (en) * 2003-10-14 2005-08-23 Agilent Technologies, Inc. Power consumption stabilization system and method
US7206907B2 (en) * 2003-12-31 2007-04-17 Agilent Technologies, Inc Reduction of noise and temperature variation in mixed-signal integrated circuits
US7068204B1 (en) * 2004-09-28 2006-06-27 Spansion Llc System that facilitates reading multi-level data in non-volatile memory
US20060203888A1 (en) * 2005-03-10 2006-09-14 Moore George S Interface randomization methods and systems employing the same
EP1925086B1 (en) * 2005-09-15 2012-06-20 Analog Devices, Inc. High speed transmission system
ATE506596T1 (en) * 2006-06-09 2011-05-15 Detnet South Africa Pty Ltd CROSSTALK REDUCTION BETWEEN DETONATORS
US7397403B2 (en) * 2006-07-07 2008-07-08 Linear Technology Corp. Range compression in oversampling analog-to-digital converters using differential input signals
US8325828B1 (en) * 2007-03-08 2012-12-04 Marvell International Ltd. Method and apparatus for detecting impulse noise
US8004436B2 (en) * 2008-10-09 2011-08-23 Analog Devices, Inc. Dithering technique for reducing digital interference
US8243637B2 (en) * 2009-05-29 2012-08-14 Alcatel Lucent Method and apparatus for mobile broadcast and multicast using randomized transmit signal phases in a single frequency network
KR101136982B1 (en) * 2009-06-29 2012-04-19 에스케이하이닉스 주식회사 Semiconductor integrated circuit
US9323957B2 (en) * 2013-03-01 2016-04-26 Marvell World Trade Ltd. Anti-tamper system based on dual random bits generators for integrated circuits
US11329743B2 (en) 2019-05-23 2022-05-10 Asahi Kasei Microdevices Corporation Transmission system, transmitting apparatus, receiving apparatus, and program
JP7252492B2 (en) * 2019-07-25 2023-04-05 日本電信電話株式会社 Synchronous detection device, synchronous detection method and program
US20230114414A1 (en) * 2021-09-28 2023-04-13 Advanced Micro Devices, Inc. Method and apparatus for protecting memory devices via a synergic approach

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63273272A (en) * 1987-05-01 1988-11-10 Canon Inc Modulation/demodulation system
US4903021A (en) * 1987-11-24 1990-02-20 Leibholz Stephen W Signal encoding/decoding employing quasi-random sampling
US5144640A (en) * 1990-01-31 1992-09-01 Futaba Denshi Kogyo K.K. Correlation device for spectrum spread communication
US5530390A (en) * 1992-03-11 1996-06-25 Soundcraft Electronics Limited Random clock generating circuit and method for control of electrical systems thereof

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4001779A (en) * 1975-08-12 1977-01-04 International Telephone And Telegraph Corporation Digital error correcting decoder
US4600942A (en) * 1982-07-29 1986-07-15 Telease, Inc. Secure coding and decoding system and method for television program signals
US4896155A (en) * 1988-06-22 1990-01-23 Rockwell International Corporation Method and apparatus for self-calibration of subranging A/D converter
NL8802291A (en) * 1988-09-16 1990-04-17 Koninkl Philips Electronics Nv DEVICE FOR TRANSMITTING DATA WORDS WHICH REPRESENT A DIGITIZED ANALOGUE SIGNAL AND A DEVICE FOR RECEIVING THE TRANSMITTED DATA WORDS.
US5381444A (en) * 1991-10-31 1995-01-10 Fujitsu Limited Radio environment measuring system
US5189418A (en) * 1992-04-16 1993-02-23 Hewlett-Packard Company Dither error correction
US5528239A (en) * 1992-04-17 1996-06-18 Crystal Semiconductor Corporation Low noise transmission of output data from a delta-sigma modulator
FR2696300B1 (en) * 1992-09-25 1994-11-18 Thomson Csf Analog-digital coding circuit with automatic compensation for zero offset.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63273272A (en) * 1987-05-01 1988-11-10 Canon Inc Modulation/demodulation system
US4903021A (en) * 1987-11-24 1990-02-20 Leibholz Stephen W Signal encoding/decoding employing quasi-random sampling
US5144640A (en) * 1990-01-31 1992-09-01 Futaba Denshi Kogyo K.K. Correlation device for spectrum spread communication
US5530390A (en) * 1992-03-11 1996-06-25 Soundcraft Electronics Limited Random clock generating circuit and method for control of electrical systems thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 013, no. 091 (P - 837) 3 March 1989 (1989-03-03) *

Also Published As

Publication number Publication date
EP0858170A2 (en) 1998-08-12
US5793318A (en) 1998-08-11
JPH10261960A (en) 1998-09-29
DE69812742T2 (en) 2004-02-05
EP0858170B1 (en) 2003-04-02
DE69812742D1 (en) 2003-05-08

Similar Documents

Publication Publication Date Title
EP0858170A3 (en) System for preventing distortion in an analog-to-digital converter
US6784814B1 (en) Correction for pipelined analog to digital (A/D) converter
TW369776B (en) A trellis encoder circuit for encoding a digital data stream
WO2002023731A3 (en) Methods and systems for digital dither
JPS5564445A (en) Code converter circuit
EP1137266A3 (en) Image processing apparatus and image display apparatus using same
KR20000016179A (en) Spiral scrambling
GB2235611A (en) Digital noise generator
GB8803627D0 (en) Digital to analogue converter
US20010008001A1 (en) Switching system and scramble control method
NO923933L (en) PROCEDURE FOR AA SYNCHRONIZE THE PSEUDO-CASUAL BINARY SEQUENCE IN A DESCRAMBLER
EP0781054A3 (en) Method of encoding and decoding for data transmission
HUP0003771A2 (en) Device for encoding/decoding n-bit source words into corresponding m-bit channel words, and vice versa
TWI258924B (en) Spectral shaping dynamic encoder for a ADC
US3462686A (en) Signal processing and reconstruction apparatus utilizing constant area quantization
US20060203888A1 (en) Interface randomization methods and systems employing the same
US4069504A (en) Digital transmission method for coded video signals
CN111181556B (en) Random multiphase clock generating circuit
JPH07101867B2 (en) Error correction code decoding method
SU1105928A1 (en) Device for transmitting and receiving discrete-type messages
RU2123764C1 (en) Method and device for analog signal scrambling
RU2214044C1 (en) Data coding/decoding device
JPH03229521A (en) Code length compression system
SU1575324A1 (en) System for transmission of television signal with differential pulse-code modulation
SU907869A1 (en) Image signal transmitting and receiving device

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: HEWLETT-PACKARD COMPANY, A DELAWARE CORPORATION

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

RIC1 Information provided on ipc code assigned before grant

Free format text: 7H 03M 1/08 A, 7H 03M 1/06 B, 7H 03M 1/12 -

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: AGILENT TECHNOLOGIES INC.

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: AGILENT TECHNOLOGIES INC. A DELAWARE CORPORATION

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: AGILENT TECHNOLOGIES, INC. (A DELAWARE CORPORATION

17P Request for examination filed

Effective date: 20010821

AKX Designation fees paid

Free format text: DE FR GB

17Q First examination report despatched

Effective date: 20011127

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): DE FR GB

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 69812742

Country of ref document: DE

Date of ref document: 20030508

Kind code of ref document: P

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20040105

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20070125

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20080313

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20080311

Year of fee payment: 11

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20080116

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080116

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090801

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20091030

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090202